<!DOCTYPE html>
<html lang='en'>

<head>
    <meta charset='UTF-8'>
    <meta http-equiv='X-UA-Compatible' content='IE=edge'>
    <meta name='viewport' content='width=device-width, initial-scale=1.0'>
    <title>Document</title>
    <script src='./vue.global.js'></script>
</head>

<body>
    <div id='app'></div>

    <!-- mixin中的数据与组件冲突时 以组件数据为准 -->
    <script>
        const myMixin = {
            data() {
                return {
                    message: 'hello',
                    foo: 'abc'
                }
            }
        }

        const app = Vue.createApp({
            // 声明使用mixin
            mixins: [myMixin],
            data() {
                return {
                    message: 'goodbye',
                    bar: 'def'
                }
            },
            created() {
                console.log(this.$data) // => { message: "goodbye", foo: "abc", bar: "def" }
            }
        }).mount("#app")
    </script>
</body>

</html>